Inspect embedded PDF signatures and sign PDFs with your signing certificate in the browser. Files and keys stay local.
Adds an embedded digital PDF signature with your signing certificate. On first use, the browser loads the signing feature from convexio.de. Your PDF and certificate are not transmitted.
Adds proof of signing time from a timestamp authority. Only a hash of the signature is sent to the authority, not the PDF. The authority must allow browser requests.
The signature covers the unchanged original PDF and is saved as a separate file. It is not an embedded PDF signature made with a signing certificate.
Checks a detached OpenPGP signature (.asc) against the loaded PDF.
Inspect PDFs locally for hidden content, active elements, and potential risks, then download a cleaned copy when needed.
Encrypt and decrypt PGP messages locally in the browser without uploading or storing content.
Remove title, author, creator, timestamps, and XMP metadata from PDFs locally.